package CharacterDevelop;

import java.util.Scanner;

/**
 * ClassName:StringTest006
 * Package:CharacterDevelop
 * Description:
 *
 * @Author:ZhangXin
 * @Create2023/1/16-0:58
 * @Version:v1.0
 */
public class StringTest006 {
    public static void main(String[] args) {
        //键盘录入一个字符串,统计该字符串中大写字母字符,小写字母字符,数字字符出现的次数
        //不考虑其他字符
        Scanner sc = new Scanner(System.in);
        System.out.println("请录入一个字符串");
        String str = sc.next();

        //2.统计----计数器思想
        int bigCount = 0;
        int smallCount =0;
        int numberCount = 0;
        for (int i = 0; i < str.length(); i++) {
            char c= str.charAt(i);
            if (c>= 'A' && c<= 'Z') {
                bigCount++;
            } else if (c >= 'a' && c <= 'z') {
                smallCount++;
            } else if (c >= '0' && c <= '9') {
                numberCount++;
            }
        }
        System.out.println("大写字母有："+bigCount+"个");
        System.out.println("小写字母有："+smallCount+"个");
        System.out.println("数字有："+numberCount+"个");
    }
}
